1121223101 has 4 divisors (see below), whose sum is σ = 1121570400. Its totient is φ = 1120875804.

The previous prime is 1121223071. The next prime is 1121223139. The reversal of 1121223101 is 1013221211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121223101 - 2¹⁸ = 1120960957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121223161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168761 + ... + 175278.

It is an arithmetic number, because the mean of its divisors is an integer number (280392600).

Almost surely, 2^1121223101 is an apocalyptic number.

It is an amenable number.

1121223101 is a deficient number, since it is larger than the sum of its proper divisors (347299).

1121223101 is an equidigital number, since it uses as much as digits as its factorization.

1121223101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347298.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1121223101 is about 33484.6696414942. The cubic root of 1121223101 is about 1038.8767152673.

Adding to 1121223101 its reverse (1013221211), we get a palindrome (2134444312).

The spelling of 1121223101 in words is "one billion, one hundred twenty-one million, two hundred twenty-three thousand, one hundred one".